Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:37:57 2012

Optimize a model with 591 rows, 154 columns and 1182 nonzeros
Presolve removed 97 rows and 0 columns
Presolve time: 0.00s
Presolved: 494 rows, 154 columns, 1058 nonzeros
Variable types: 0 continuous, 154 integer (154 binary)
Found heuristic solution: objective 47.0000000

Root relaxation: objective 6.500000e+01, 232 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   65.00000    0  128   47.00000   65.00000  38.3%     -    0s
     0     0   63.40909    0  151   47.00000   63.40909  34.9%     -    0s
     0     0   62.15686    0  148   47.00000   62.15686  32.2%     -    0s
H    0     0                      49.0000000   62.15686  26.9%     -    0s
     0     0   61.34874    0  151   49.00000   61.34874  25.2%     -    0s
     0     0   60.78184    0  152   49.00000   60.78184  24.0%     -    0s
     0     0   60.64444    0  153   49.00000   60.64444  23.8%     -    0s
     0     0   60.22207    0  154   49.00000   60.22207  22.9%     -    0s
     0     0   60.12147    0  154   49.00000   60.12147  22.7%     -    0s
     0     0   60.06723    0  153   49.00000   60.06723  22.6%     -    0s
     0     0   60.02936    0  154   49.00000   60.02936  22.5%     -    0s
     0     0   60.02936    0  149   49.00000   60.02936  22.5%     -    0s
H    0     0                      51.0000000   60.02936  17.7%     -    0s
     0     2   60.02775    0  149   51.00000   60.02775  17.7%     -    0s
H   28    13                      54.0000000   59.46584  10.1%  51.6    0s

Cutting planes:
  Gomory: 1
  Zero half: 164

Explored 732 nodes (24177 simplex iterations) in 0.92 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.400000000000e+01, best bound 5.400000000000e+01, gap 0.0%